Nonstop flight route between Fort Sill, Oklahoma, United States and Castries, Saint Lucia:
Departure Airport:

Arrival Airport:

Distance from FSI to SLU:
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- About this route
- FSI Airport Information
- SLU Airport Information
- Facts about FSI
- Facts about SLU
- Map of Nearest Airports to FSI
- List of Nearest Airports to FSI
- Map of Furthest Airports from FSI
- List of Furthest Airports from FSI
- Map of Nearest Airports to SLU
- List of Nearest Airports to SLU
- Map of Furthest Airports from SLU
- List of Furthest Airports from SLU
About this route:
A direct, nonstop flight between Henry Post Army Airfield (FSI), Fort Sill, Oklahoma, United States and George F. L. Charles Airport (SLU), Castries, Saint Lucia would travel a Great Circle distance of 2,729 miles (or 4,391 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Henry Post Army Airfield and George F. L. Charles Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Henry Post Army Airfield and George F. L. Charles Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | FSI / KFSI |
Airport Name: | Henry Post Army Airfield |
Location: | Fort Sill, Oklahoma, United States |
GPS Coordinates: | 34°38'58"N by 98°24'7"W |
Operator/Owner: | U.S. Army ATCA-ASO |
Airport Type: | Military |
Elevation: | 1189 feet (362 meters) |
# of Runways: | 1 |
View all routes: | Routes from FSI |
More Information: | FSI Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SLU / TLPC |
Airport Name: | George F. L. Charles Airport |
Location: | Castries, Saint Lucia |
GPS Coordinates: | 14°1'13"N by 60°59'35"W |
Operator/Owner: | Saint Lucia Air & Sea Ports Authority |
Airport Type: | Public |
Elevation: | 22 feet (7 meters) |
# of Runways: | 1 |
View all routes: | Routes from SLU |
More Information: | SLU Maps & Info |
Facts about Henry Post Army Airfield (FSI):
- After returning from combat duty in France, a cadre of the 135th Aero Squadron ) was assigned to Post Field as an observation squadron, supplying aircraft for the United States Army Field Artillery School at Fort Sill and supported Army units at Fort Leavenworth, Kansas.
- The furthest airport from Henry Post Army Airfield (FSI) is Sir Gaëtan Duval Airport (RRG), which is located 10,920 miles (17,575 kilometers) away in Rodrigues Island, Mauritius.
- The first Army aviation at Fort Sill began on 26 July 1915 when eight Curtiss JN-3 airplanes of the 1st Aero Squadron arrived from Rockwell Field, California.
- Henry Post Army Airfield (FSI) currently has only 1 runway.
- The closest airport to Henry Post Army Airfield (FSI) is Lawton–Fort Sill Regional Airport (LAW), which is located only 6 miles (9 kilometers) S of FSI.
- In 1940 the Artillery decided that the Air Corps had outgrown such mundane chores as artillery spotting, and it was decided that it would take care of itself with its own observation aircraft.
Facts about George F. L. Charles Airport (SLU):
- On average, George F.
- The closest airport to George F. L. Charles Airport (SLU) is Hewanorra International Airport (UVF), which is located 20 miles (32 kilometers) S of SLU.
- The furthest airport from George F. L. Charles Airport (SLU) is Umbu Mehang Kunda Airport (WGP), which is nearly antipodal to George F. L. Charles Airport (meaning George F. L. Charles Airport is almost on the exact opposite side of the Earth from Umbu Mehang Kunda Airport), and is located 12,124 miles (19,511 kilometers) away in Waingapu, Sumba, East Nusa Tenggara, Indonesia.
- The airport offers an RNAV, and NDB approach for only runway 9, landings on runway 27 are strictly visual.
- George F. L. Charles Airport (SLU) currently has only 1 runway.
- Because of George F. L. Charles Airport's relatively low elevation of 22 feet, planes can take off or land at George F. L. Charles Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.